G37x Sedan AWD V6-3.7L (VQ37VHR) (2010)
Coolant: Service and Repair
Flushing
ENGINE COOLANT
Flushing
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
Tightening torque : Refer to CO-13, "Exploded View". See: Engine, Cooling and Exhaust/Cooling System/Radiator/Service and Repair/Removal
and Replacement/Exploded View
If water drain plugs on cylinder block are removed, close and tighten them. Refer to See: Engine, Cooling and Exhaust/Engine/Service and
Repair/Procedures/Engine Stand Setting.
2. Remove air relief plug (1) on heater hose (2).
White arrow : Vehicle front
3. Remove air relief plug (2) on radiator.
1 : Reservoir tank
3 : Engine cover
White arrow : Vehicle front
4. Fill radiator with water until water spills from the air relief holes, then close air relief plugs. Fill radiator and reservoir tank with water and reinstall
radiator cap.
Tightening torque : Refer to CO-13, "Exploded View". See: Engine, Cooling and Exhaust/Cooling System/Radiator/Service and Repair/Removal
and Replacement/Exploded View
5. Run the engine and warm it up to normal operating temperature.
6. Rev the engine two or three times under no-load.
7. Stop the engine and wait until it cools down.
8. Drain water from the system. Refer to See: Draining.
9. Repeat steps 1 through 8 until clear water begins to drain from radiator.
10. Check that the reservoir tank cap is tightened.